Carlos Mendoza, academic and documentalist, presents this work in which the five essays that make up the volume study, analyze and review theoretical debates of the documentary, allusions to the historical antecedents: creation, genealogy and problematic; They investigate the links that unite the so-called new avant-garde of non-fiction with postmodern thought, and approach documentary cinema from the perspective of the current cultural crisis. They are works that give notice and show about the risks that the game of novelties and aestheticisms distance the documentary from its real reference.